Sewing-machine.



W. R. ROGERS.

SEWING MACHINE.

APPLlcATloN FILED luNE so. |915.

Patented Sept. 11, 1917.

4 SHEETS-SHEET l.

WIT/VESSES W. R. ROGERS.

SEWING MACHINE.4

APPLICATION FILED IuNE 30. 1915.

Patented Sept. 11, 1917.

4 SHEETS-SHEET ZL v www@ A 77'0HIVEYS W. R. ROGERS.

SEWING MACHINE.

APPLICATION FILED JUNE 30. 1915.

Patented Sept. 11, 191?.

4 SHEETS-SHEET 3.

m m U Wl TNESSES Patented Sept. 11, 191?.

4 SHEETS-SHEET 4.

W. R. ROGERS.

SEWING MACHINE.

i." APPLICATION FILED .IUNE 30. I9I5. L39,

WILL E. ROGERS, OF NEWARK, NEW JERSEY, ASSIGNOB, T0 WILLIAM RAUIBIT-SCHECK, OF NEW YORK, N. Y.

SEWING-MACHINE Specification of Letters Patent.

Application filed .Tune 30, 1915. Serial No. 37,233.

To all whom t may concern:

Be it known that l, WILLIAM R. Roenes, a citizen of the United States,and a resident of Newark, in the county of Essex and State 0f NewJersey, have invented a new and linproved Sewing-Machine, of which thefollowing is a specilication.

My invention is directed more particularly to providing a sewingmachine, which produces zig-zag stitches, with mechanism adapted, amongother things, for the production, by automatic means, of a straight seamwith gaps, to unite a strip of fabric material of indeterminate length,to a body, or base, fabric, on which it is mounted and supported, whileproducing gaps therein, as hereinafter described.

l ain aware that it is not new to produce mechanically, a single gap ofdeterminate width, in such a seam, but such gap is thus produced by sochanging the operative position of the material, that it shall besuffi-A ciently out of alinement with the seam, that the needle shallnot engage the material of the strip, but only the body fabric duringthe interval required to produce such gap, thus leaving a gap ofdeterminate width adapted for the side opening in a stay pocket, but thesaine is not produced by 'automatic means nor is the mechanism adaptedfor such automatic production thereof at measured intervals, or for thereinforcement of the seam by a continuous series of automaticoperations, with a plurality of tie stitches at the beginning and end ofeach gap.

Among other objects, my invention 1ncludes that of providingautomaticmeans for the mechanical stitchin of a seam of the character described,which shall be adapted to produce a fabric structure suitable formounting thereon, in operative position, of a set of hooks and eyes, byengaging the mates of the pairs in the gaps thus pro-v vided,'they beingretained in such position by their Shanks, thus dispensing with thenecessity for stapling the hooks and eyes to the fabric, thus obviatingthe objectionable features of such method.

A practical embodiment of the invention is represented in'theaccompanyingdrawings forming a part of this specification, in whichsimilar characters of reference indicate corresponding parts in all theviews.

Figure 1-is a side elevation of the sewing machine with parts shown insection and with the guides for the fabric strips omitted;

Fig. 2 is an elevation of the front end of the same with the guides forthe fabric strips 1n position; v

Fig.3 is an enlarged transverse section of the sewing machine on theline 3-3 of Fig. l;

Fig. l is a similar view of the mechanism for imparting lateralreciprocatory motion to the feed bar While it is inoperative;

Fig. 5 is a sectional plan view of the same on the line 5*:3 of Fig. 3and with the parts in operative position; y

Fig. 6 is a plan view of two fabric strips sewed together to form spacedopenings for hooks or eyes; and

Fig. 7 is an enlarged transverse section of the same on the line 7 7 ofFig. 6.

ln sewing machines. of the class mentioned as adapted to produce a zigzag stitch, the means now in use for producing such stitches includesone type which provides a positive, lateral reciprocatory motion of theneedle bar between vertical reciprocations of the latter, the same beingmounted to reciprocate vertically both in its normal and defiectedpositions, and another type in which the needle bar is fulcrumed tovibrate laterally, and to normally reciprocate vertically, but at anangle in the deflected posi tion.

ln the drawings l show my invention as embodied in a sewing machine ofthe Singer, vibratory needle type; it is however, manifest that myautomatic mechanism for the control of the lateral motions of the needlebar is equally adapted for the control of a needle bar mounted t0reciprocate vertically in both positions, without departing from thespirit of my invention,l and that this phase of construction is notmaterial as affecting its utility, or scope.

The stitch-producing` mechanism of the sewing machine consists of aneedle A and the usual looping device B, of which the needle A issecured in a needle bar C mounted to reciprocate in an arm D fulcrumedat its upper end on the bracket arm E of the sewing machine. By thearrangement described the arm D and the needle bar C and with it theneedle A can be vibrated laterally, that is, from a normal verticalposition to right and back again to vertical Patenten sept. ii, aait.,

position. The needle bar C is connected by the pitman F and crank F withthe needle bar shaft F2 for imparting a continuous reciprocating motionto the needle bar C and. the needle A.

The automatic mechanism for controlling the lateral motions of theneedle bar is as follows: A transverse cam shaft G is journaled insuitable bearings arranged on the bracket arm E and on the said camshaft 'G is secured a worm wheel G in mesh with a worm G2 secured on theneedle bar shaft F2 so that when the latter is running a rotary.motionis given to the shaft G to rotate the latter in the direction of thearrow a. On the front end of the shaft G is secured a cam H in the formof a wheel having in its peripheral face two sets of dialnetricallyopposite notches or recesses H, H2 and H2, of which the notches H and H3are comparatively short in comparison with the notches H2, as will bereadily understood by reference to Fig. 1. The peripheral face of thecam H is engaged by a friction roller I jornaled on the free end of anarm I mounted to move laterally on the bracket arm E and pressed on by aspring I2 to hold the friction roller I in engagement with theperipheral face 'of the cam H.

The arm I thus receives lateral motion from the cam4 H when the roller Iengages in any of the recesses in the periphery of the cam and againwhen the roller is disengaged from the recess and such' motion isltransmitted by it to the needle bar frame D through ,the link J to thepart J2 of which it is connected by the pi-n J let through the slot orguideway J .2. By the lateral motions thus imparted the needle bar Cisdeliected by the entry of the roller into a recess and it isreciprocated in such deiected position until the roller is disengagedfrom the recess when the needle bar 'is returned to its normal position.The link J is preferably made in two parts J2, J3 adjustably connectedwith each other to permit of accurately setting the arm D. For thepurpose mentioned, the part J2 is provided with an elongated slot J 4through which extend screws J5 engaging the part AJ3 to allow ofadjusting the latter relatively to the part J 2. In order to,vary thesidewise throw of the needle bar C,.the pivot J is adjusted up or downin the guideway I2. When the cam H is rotating inthe direction of the'arrow a then the needle bar C is held in vertical position as long asthe roller I travels on the peripheral face of the cam H. When theroller I passes into the first notch H and travels along thesame thenthe needle bar C is swung to the right and is returned to normalposition by the roller emerging from the recess and immediatelythereafter the friction roller passes into thesecond notch H2 to againcause oscillation of the needle -tion roller I passes into the 4notch H2to again oscillate the Ineedle'bar to the right and to return the needlebar to vertical position at the time the friction roller I passes out ofthe' last notch H2. By the arrangement described, the stitch-producingmechanism makes a row of stitches K while in vertical position to fastenthe two strips L and L together along the side of the edge of thestripL; during the time the friction roller passes in and out of thenotch H the cross or tie stitches K are made; during the time thefriction roller I travels along the notch H2, a row of stitches K2 ismade on the ,strip L only; and during the time the friction roller Ipasses in and out of the notch H2cross stitches K3 are made from thepiece L onto the piece L, after which the row of stitches K iscontinued,v

as will be readily understood'by reference to Figs. 6 and 7. Thus by thearrangement describedv an openingL2 is left between the strips L and L',the opening being of a length corresponding to the distance between thecross stitches K and K2. A hook or eye L3 may be readily proiectedthrough the opening L2, as indicated in Fig. 6, with the base of thehook or eye L3 abutting against the seamformed by the stitches K unitingthe two strips L and L with each other.

During the time the rows of stitches K and K2 are made, the feed bar Nis operative, but during the' time the cross stitches lK and K3 are madethe feed bar N is rendered inoperative. .For this purpose the followingarrangement is made: The feed bar N is provided with a transversely eX-tending arm N fulcrumed on an arm,0 of a rock shaft O extendinglengthwise of the machine underneath the base E and journaled insuitable bearings attached to the said base. When the shaft vO is rockeda forward and backward movement is given to the feed bar N. An up anddown swinging movement is given to the feed bar N by the usualmechanism, including a hollow rock shaft P having an arm P movablyengaging a fork N2 formed on the feed bar N. The shaft P is providednear its rear end with an arm P2 connected by an eccentric rod P3 withan eccentric P4 held on the needle bar shaft F2 so that when the machineis operated a continuous rocking motion is given to the shaft P which bythe arm P imparts an oscillatory movement to the feed bar N. Through thehollow shaft P extends the shaft B driving thelooping device B anddriven by pulleys B2, B3 and a belt B1 from the needle bar shaft F2.

The rock shaft O, previously mentioned, is provided at its rear end withan arm 02 provided with an elongated slot or guideway 03 in which ismovably-mounted a slide Q also engaging a guideway R2 in a swing arm Rhaving its pivot R journaled in a bearing formed on a bracket E2depending from the base E. The arm R is pivotally connected with aneccentric rod S of an eccentric S2 mounted on the needle bar shaft F2,so that when the machine is operated the arm R is caused to oscillateand the oscillatory movement of the arm R is transmitted by the slide Qto the arm O2 to rock the shaft O. The slide Q, is provided with a pivotpin Q pivotally connected by a link T with one arm of a bell crank leverT fulcrumed at I groove V in the peripheral face of a cam V secured onthe :shaft G previously mentioned. The cam groove V is provided witho'sets V2, V3 for imparting a swinging motion to the bell crank yleverU. During the time the friction roller U2 is traveling through thestraight portion of the cam V and groove V, the slide Q isheld in theguideway of the arm R a distance from the axis of the arm, so that aswinging motion is given by the slide Q to the arm 02 to rock the shaft0, as previously mentioned. When, however, the friction roller U2 movesinto engagement with the offset V2 or V3 then a. rocking motion is givento ythe bell crank lever U whereby a similar rocking movement is givento the bell crank lever T so that the slide Q is moved into centralposition relatively to the aXis of the pivot R and consequently theslide Q does not impart a rocking movement to the shaft 0 for the tlmebeing. The offsets V2 and V3 are so arranged relatively to the notchesH, H3 that when the cross stitches K and K3 are made the forward andbackward feeding movement of the feed bar N ceases, but during the timethe rows of stitches K and K2 are made the friction roller U2 travels inthe straight portions of the groove V and the slide R is a distance fromthe center of the pivot R', and hence a rocking motion is `given to theshaft 0, thus moving the feed bar X forward and backward.

The link T, previously mentioned, is preferably made in two parts T3,T4, adjustable one on the other to lengthen or shorten the link, and forthis purpose the part T3 is provided with an elongated slot T5 throughwhich extend screws T6 screwing in the part T4. On loosening the screwsT6 the part T4 of the link T can be adjusted to lengthen or shorten thelength in order to obtain proper adjustment of the pivot pin Q andl theslide Q to move the latter into axial alinement with the pivot R', aspreviously explained.

The fabric strips L and L pass through suitable scrolls W, W attached tothe base E at the front of the machine to double up the edges of thestrips and to properly guide thesame to the needle A, the feed bar N andthe presser foot X of usual construction (see Fig. 2). The strips L andL prior to reaching the scrolls W and W pass through tension devices W2,W3 and the strips are guided to the said tension devices over a guiderod W4.

The operation is as follows:

When the machine is operated, the stitchproducing mechanism forms a row'of stitches K for a predetermined distance and then the forward andbackward feeding movement of the feed bar N ceases and the needle bar Cis oscillated laterally to form the first cross or tie stitches K, thatis, at the time the friction roller I passes through the notch H. Wvhenthe friction roller T engages in the notch H2 the needle bar C is heldin deflected position and the short row of stitches K2 is now formed onthe trip L only, and during this time the feed bar N is operativelypositioned. When the end of the rows of stitches K2 is reached, theoperative movement of the'feed bar N ceases and the' needle bar C isagain oscillated to form the cross stitches K3, the friction roller lfthen passing through the notch H3. When the friction roller T leaves thenotch H3 the needle bar C is returned to vertical position and is heldin this position for forming the next row of stitches K to fasten thestrip L to the strip L.

There is a related motion between the needle bar and the feed barwhereby at periodic intervals, during which the feed bar is inoperative,the needle bar is operatively vibrated laterally, between downwardreciprocations, to produce tie stitches, and in the intervals betweensuch lateral vibratory periods of the needle bar the feed bar isoperatively reciprocated to advance the material forward in a straightline. Thus by the arrangement described the rows of stitches K are ofthe same predetermined length and the openings L2 are formedintermediate the said rows of stitches K, and the opening has its sidewalls reinforced by the sets lof cross stitches K and K3 so as tosecurely hold the hook or eye L3 in position in the opening.

Having thus described uy invention, T claim as new and desire to secureby Letters Patent:

1. In a sewing machine, the combination of a feed mechanism for feedingthe material forward in a straight line, a stitch producing mechanismhaving a reciprocating. needle bar adapted to vibrate laterally of ill@lllti the line of movement of the material, means for so vibrating theneedle bar and means for rendering the feed mechanism inoperativevduring such lateral movements of the needle bar.

2. In a sewing machine, the combination of a feed mechanism for feedingthe material forward in a straight line, a stitch producing mechanismhaving a reciprocating needle bar, the needle bar and the feed mechanismbeing laterally movable relatively one to the other and means forrendering the feed mechanism inoperative at intervals in order to permitof the production of a line of stitching having lateral 0E- sets.

3. In a sewing machine, the combination of a feed bar, a stitchproducing mechanism having a reciprocating needle bar adapted tovibrate, a revoluble cam, means connecting such cam with such feed barto periodically render the feed bar inoperative, a second revoluble camand a connection between the latter and the needle bar to vibrate thelatter at the time the feed bar is inoperative.

4. In a sewing machine, the combination of a feed mechanism having afeed bar, a stitch producing/mechanism having a reciprocating needle baradapted to vibrate laterally, a needle bar shaft connected with theneedle bar to reciprocate the latter, a cam shaft driven from the needlebar shaft and provided with two cams, a connection between one of suchcams and such feed bar to render the vlatter periodically inoperativeand a connection between the other cam and the needle bar to vibrate thelatter `during the period the feed bar is inoperative.

5. In a sewing machine, the combination of a feed mechanism for feedingthe material in a straight line, a stitch producing mechanism having areciprocating needle bar, mounted to move laterally of the line ofmovement of the material, means for moving the needle laterally andoperatively retaining it in this position for a predetermined length oftime and then returning it to its normal position and means forrendering the feed mechanism inoperative during the lateral movements ofthe needle bar.

In testimony whereof I have signed my name to this specification inthepresence of two subscribing witnesses.

wiLLIAM i2.A Roenes.

Witnesses:

WILLIAM RAUBrrsCHEK, .Inma MAURER.

